Modify slide ad speed, fix the first load time will wait twice interval to change image.
Modify slide ad speed, fix the first load time will wait twice interval to change image.

Ju2ender/JavaScript-Exercise,Ju2ender/JavaScript-E,Ju2ender/JavaScript-E,Ju2ender/JavaScript-Exercise,Ju2ender/JavaScript-E,Ju2ender/JavaScript-E,Ju2ender/JavaScript-Exercise,Ju2ender/JavaScript-Exercise